全文获取类型
收费全文 | 1380795篇 |
免费 | 106899篇 |
国内免费 | 7224篇 |
专业分类
耳鼻咽喉 | 17135篇 |
儿科学 | 44384篇 |
妇产科学 | 36926篇 |
基础医学 | 202030篇 |
口腔科学 | 36831篇 |
临床医学 | 136247篇 |
内科学 | 263935篇 |
皮肤病学 | 26894篇 |
神经病学 | 113684篇 |
特种医学 | 49601篇 |
外国民族医学 | 385篇 |
外科学 | 187060篇 |
综合类 | 39281篇 |
现状与发展 | 19篇 |
一般理论 | 464篇 |
预防医学 | 119203篇 |
眼科学 | 30152篇 |
药学 | 104420篇 |
61篇 | |
中国医学 | 6963篇 |
肿瘤学 | 79243篇 |
出版年
2021年 | 12896篇 |
2019年 | 12913篇 |
2018年 | 17626篇 |
2017年 | 13779篇 |
2016年 | 14507篇 |
2015年 | 17202篇 |
2014年 | 23439篇 |
2013年 | 34902篇 |
2012年 | 48277篇 |
2011年 | 51140篇 |
2010年 | 30520篇 |
2009年 | 27871篇 |
2008年 | 45860篇 |
2007年 | 48144篇 |
2006年 | 48080篇 |
2005年 | 46110篇 |
2004年 | 43315篇 |
2003年 | 41114篇 |
2002年 | 39711篇 |
2001年 | 61867篇 |
2000年 | 63402篇 |
1999年 | 52884篇 |
1998年 | 14944篇 |
1997年 | 13621篇 |
1996年 | 13388篇 |
1995年 | 12711篇 |
1994年 | 11842篇 |
1993年 | 11031篇 |
1992年 | 41719篇 |
1991年 | 40905篇 |
1990年 | 39562篇 |
1989年 | 37452篇 |
1988年 | 34662篇 |
1987年 | 33790篇 |
1986年 | 32221篇 |
1985年 | 30694篇 |
1984年 | 23078篇 |
1983年 | 19633篇 |
1982年 | 11775篇 |
1979年 | 20818篇 |
1978年 | 14830篇 |
1977年 | 12081篇 |
1976年 | 11884篇 |
1975年 | 12119篇 |
1974年 | 14812篇 |
1973年 | 14495篇 |
1972年 | 13371篇 |
1971年 | 12427篇 |
1970年 | 11497篇 |
1969年 | 10420篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
12.
Hannah C. Nordhues Anjali Bhagra Natya N. Stroud Jennifer A. Vencill Carol L. Kuhle 《Mayo Clinic proceedings. Mayo Clinic》2021,96(7):1907-1920
The coronavirus disease 2019 (COVID-19) pandemic has rapidly created widespread impacts on global health and the economy. Data suggest that women are less susceptible to severe illness. However, sex-disaggregated data are incomplete, leaving room for misinterpretation, and focusing only on biologic sex underestimates the gendered impact of the pandemic on women. This narrative review summarizes what is known about gender disparities during the COVID-19 pandemic and the economic, domestic, and health burdens along with overlapping vulnerabilities related to the pandemic. In addition, this review outlines recommended strategies that advocacy groups, community leaders, and policymakers should implement to mitigate the widening gender disparities related to COVID-19. 相似文献
13.
14.
15.
Heather L. Brown 《Journal of emergency nursing》2021,47(2):321-325
The coronavirus 2019 pandemic has affected almost every aspect of health care delivery in the United States, and the emergency medicine system has been hit particularly hard while dealing with this public health crisis. In an unprecedented time in our history, medical systems and clinicians have been asked to be creative, flexible, and innovative, all while continuing to uphold the important standards in the US health care system. To continue providing quality services to patients during this extraordinary time, care providers, organizations, administrators, and insurers have needed to alter longstanding models and procedures to respond to the dynamics of a pandemic. The Emergency Medicine Treatment and Active Labor Act of 1986, or EMTALA, is 1 example of where these alterations have allowed health care facilities and clinicians to continue their work of caring for patients while protecting both the patients and the clinicians themselves from infectious exposures at the same time. 相似文献
16.
17.
18.
Kara S. Tanaka MD Veronica R. Andaya BA Steven W. Thorpe MD Kenneth R. Gundle MD James B. Hayden MD Yee-Cheen Duong MD Raffi S. Avedian MD David G. Mohler MD Lee J. Morse MD Melissa N. Zimel MD Richard J. O'Donnell MD Andrew Fang MD Robert Lor Randall MD Tina H. Tran BS Christin New BA Rosanna L. Wustrack MD other members of Study Group FORCE 《Journal of surgical oncology》2023,127(1):148-158
19.
Deitelzweig Steve Luo Xuemei Nguyen Jennifer L. Malhotra Deepa Emir Birol Russ Cristina Li Xiaoyan Lee Theodore C. Ferri Mauricio Wiederkehr Danny Reimbaeva Maya Barnes Geoffrey D. Piazza Gregory 《Journal of thrombosis and thrombolysis》2022,54(4):696-696
Journal of Thrombosis and Thrombolysis - 相似文献
20.
Qing-Yang Que Lin-Cheng Zhang Jia-Qi Bao Sun-Bin Ling Xiao Xu 《World journal of gastrointestinal surgery》2022,14(5):397-408
Over the last 40 years, the incidence and prevalence of gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) have continued to increase. Compared to other epithelial neoplasms in the same organ, GEP-NENs exhibit indolent biological behavior, resulting in more chances to undergo surgery. However, the role of surgery in high-grade or advanced GEP-NENs is still controversial. Surgery is associated with survival improvement of well-differentiated high-grade GEP-NENs, whereas poorly differentiated GEP-NENs that may benefit from resection require careful selection based on Ki67 and other tissue bio markers. Additionally, surgery also plays an important role in locally advanced and metastatic disease. For locally advanced GEP-NENs, isolated major vascular involvement is no longer an absolute contraindication. In the setting of metastatic GEP-NENs, radical intended surgery is recommended for patients with low-grade and resectable metastases. For unresectable metastatic disease, a variety of surgical approaches, including cytoreduction of liver metastasis, liver transplantation, and surgery after neoadjuvant treatment, show survival benefits. Primary tumor resection in GEP-NENs with unresectable metastatic disease is associated with symptom control, prolonged survival, and improved sensitivity toward systemic therapies. Although there is no established neoadjuvant or adjuvant strategy, increasing attention has been given to this emerging research area. Some studies have reported that neoadjuvant therapy effectively reduces tumor burden, improves the effectiveness of subsequent surgery, and decreases surgical complications. 相似文献